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Date: Mon, 24 Oct 2022 13:39:25 +0900
From: Hector Martin <marcan@...can.st>
To: "Rafael J. Wysocki" <rafael@...nel.org>,
Viresh Kumar <viresh.kumar@...aro.org>,
Matthias Brugger <matthias.bgg@...il.com>
Cc: Hector Martin <marcan@...can.st>, Sven Peter <sven@...npeter.dev>,
Alyssa Rosenzweig <alyssa@...enzweig.io>,
Rob Herring <robh+dt@...nel.org>,
Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
Stephen Boyd <sboyd@...nel.org>,
Ulf Hansson <ulf.hansson@...aro.org>,
Marc Zyngier <maz@...nel.org>,
Mark Kettenis <mark.kettenis@...all.nl>, asahi@...ts.linux.dev,
linux-arm-kernel@...ts.infradead.org, linux-pm@...r.kernel.org,
devicetree@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: [PATCH v3 5/5] arm64: dts: apple: Add CPU topology & cpufreq nodes for t8103
Add the missing CPU topology/capacity information and the cpufreq nodes,
so we can have CPU frequency scaling and the scheduler has the
information it needs to make the correct decisions.
Boost states are commented out, as they are not yet available (that
requires CPU deep sleep support, to be eventually done via PSCI).
The driver supports them fine; the hardware will just refuse to ever
go into them at this time, so don't expose them to users until that's
done.
Signed-off-by: Hector Martin <marcan@...can.st>
---
arch/arm64/boot/dts/apple/t8103.dtsi | 206 +++++++++++++++++++++++++--
1 file changed, 196 insertions(+), 10 deletions(-)
diff --git a/arch/arm64/boot/dts/apple/t8103.dtsi b/arch/arm64/boot/dts/apple/t8103.dtsi
index 51a63b29d404..055e395ee88d 100644
--- a/arch/arm64/boot/dts/apple/t8103.dtsi
+++ b/arch/arm64/boot/dts/apple/t8103.dtsi
@@ -22,71 +22,245 @@ cpus {
#address-cells = <2>;
#size-cells = <0>;
- cpu0: cpu@0 {
+ cpu-map {
+ cluster0 {
+ core0 {
+ cpu = <&cpu_e0>;
+ };
+ core1 {
+ cpu = <&cpu_e1>;
+ };
+ core2 {
+ cpu = <&cpu_e2>;
+ };
+ core3 {
+ cpu = <&cpu_e3>;
+ };
+ };
+
+ cluster1 {
+ core0 {
+ cpu = <&cpu_p0>;
+ };
+ core1 {
+ cpu = <&cpu_p1>;
+ };
+ core2 {
+ cpu = <&cpu_p2>;
+ };
+ core3 {
+ cpu = <&cpu_p3>;
+ };
+ };
+ };
+
+ cpu_e0: cpu@0 {
compatible = "apple,icestorm";
device_type = "cpu";
reg = <0x0 0x0>;
enable-method = "spin-table";
cpu-release-addr = <0 0>; /* To be filled by loader */
+ operating-points-v2 = <&ecluster_opp>;
+ capacity-dmips-mhz = <714>;
+ performance-domains = <&cpufreq_e>;
};
- cpu1: cpu@1 {
+ cpu_e1: cpu@1 {
compatible = "apple,icestorm";
device_type = "cpu";
reg = <0x0 0x1>;
enable-method = "spin-table";
cpu-release-addr = <0 0>; /* To be filled by loader */
+ operating-points-v2 = <&ecluster_opp>;
+ capacity-dmips-mhz = <714>;
+ performance-domains = <&cpufreq_e>;
};
- cpu2: cpu@2 {
+ cpu_e2: cpu@2 {
compatible = "apple,icestorm";
device_type = "cpu";
reg = <0x0 0x2>;
enable-method = "spin-table";
cpu-release-addr = <0 0>; /* To be filled by loader */
+ operating-points-v2 = <&ecluster_opp>;
+ capacity-dmips-mhz = <714>;
+ performance-domains = <&cpufreq_e>;
};
- cpu3: cpu@3 {
+ cpu_e3: cpu@3 {
compatible = "apple,icestorm";
device_type = "cpu";
reg = <0x0 0x3>;
enable-method = "spin-table";
cpu-release-addr = <0 0>; /* To be filled by loader */
+ operating-points-v2 = <&ecluster_opp>;
+ capacity-dmips-mhz = <714>;
+ performance-domains = <&cpufreq_e>;
};
- cpu4: cpu@...00 {
+ cpu_p0: cpu@...00 {
compatible = "apple,firestorm";
device_type = "cpu";
reg = <0x0 0x10100>;
enable-method = "spin-table";
cpu-release-addr = <0 0>; /* To be filled by loader */
+ operating-points-v2 = <&pcluster_opp>;
+ capacity-dmips-mhz = <1024>;
+ performance-domains = <&cpufreq_p>;
};
- cpu5: cpu@...01 {
+ cpu_p1: cpu@...01 {
compatible = "apple,firestorm";
device_type = "cpu";
reg = <0x0 0x10101>;
enable-method = "spin-table";
cpu-release-addr = <0 0>; /* To be filled by loader */
+ operating-points-v2 = <&pcluster_opp>;
+ capacity-dmips-mhz = <1024>;
+ performance-domains = <&cpufreq_p>;
};
- cpu6: cpu@...02 {
+ cpu_p2: cpu@...02 {
compatible = "apple,firestorm";
device_type = "cpu";
reg = <0x0 0x10102>;
enable-method = "spin-table";
cpu-release-addr = <0 0>; /* To be filled by loader */
+ operating-points-v2 = <&pcluster_opp>;
+ capacity-dmips-mhz = <1024>;
+ performance-domains = <&cpufreq_p>;
};
- cpu7: cpu@...03 {
+ cpu_p3: cpu@...03 {
compatible = "apple,firestorm";
device_type = "cpu";
reg = <0x0 0x10103>;
enable-method = "spin-table";
cpu-release-addr = <0 0>; /* To be filled by loader */
+ operating-points-v2 = <&pcluster_opp>;
+ capacity-dmips-mhz = <1024>;
+ performance-domains = <&cpufreq_p>;
};
};
+ ecluster_opp: opp-table-0 {
+ compatible = "operating-points-v2";
+ opp-shared;
+
+ opp01 {
+ opp-hz = /bits/ 64 <600000000>;
+ opp-level = <1>;
+ clock-latency-ns = <7500>;
+ };
+ opp02 {
+ opp-hz = /bits/ 64 <972000000>;
+ opp-level = <2>;
+ clock-latency-ns = <22000>;
+ };
+ opp03 {
+ opp-hz = /bits/ 64 <1332000000>;
+ opp-level = <3>;
+ clock-latency-ns = <27000>;
+ };
+ opp04 {
+ opp-hz = /bits/ 64 <1704000000>;
+ opp-level = <4>;
+ clock-latency-ns = <33000>;
+ };
+ opp05 {
+ opp-hz = /bits/ 64 <2064000000>;
+ opp-level = <5>;
+ clock-latency-ns = <50000>;
+ };
+ };
+
+ pcluster_opp: opp-table-1 {
+ compatible = "operating-points-v2";
+ opp-shared;
+
+ opp01 {
+ opp-hz = /bits/ 64 <600000000>;
+ opp-level = <1>;
+ clock-latency-ns = <8000>;
+ };
+ opp02 {
+ opp-hz = /bits/ 64 <828000000>;
+ opp-level = <2>;
+ clock-latency-ns = <19000>;
+ };
+ opp03 {
+ opp-hz = /bits/ 64 <1056000000>;
+ opp-level = <3>;
+ clock-latency-ns = <21000>;
+ };
+ opp04 {
+ opp-hz = /bits/ 64 <1284000000>;
+ opp-level = <4>;
+ clock-latency-ns = <23000>;
+ };
+ opp05 {
+ opp-hz = /bits/ 64 <1500000000>;
+ opp-level = <5>;
+ clock-latency-ns = <24000>;
+ };
+ opp06 {
+ opp-hz = /bits/ 64 <1728000000>;
+ opp-level = <6>;
+ clock-latency-ns = <29000>;
+ };
+ opp07 {
+ opp-hz = /bits/ 64 <1956000000>;
+ opp-level = <7>;
+ clock-latency-ns = <31000>;
+ };
+ opp08 {
+ opp-hz = /bits/ 64 <2184000000>;
+ opp-level = <8>;
+ clock-latency-ns = <34000>;
+ };
+ opp09 {
+ opp-hz = /bits/ 64 <2388000000>;
+ opp-level = <9>;
+ clock-latency-ns = <36000>;
+ };
+ opp10 {
+ opp-hz = /bits/ 64 <2592000000>;
+ opp-level = <10>;
+ clock-latency-ns = <51000>;
+ };
+ opp11 {
+ opp-hz = /bits/ 64 <2772000000>;
+ opp-level = <11>;
+ clock-latency-ns = <54000>;
+ };
+ opp12 {
+ opp-hz = /bits/ 64 <2988000000>;
+ opp-level = <12>;
+ clock-latency-ns = <55000>;
+ };
+#if 0
+ /* Not available until CPU deep sleep is implemented */
+ opp13 {
+ opp-hz = /bits/ 64 <3096000000>;
+ opp-level = <13>;
+ clock-latency-ns = <55000>;
+ turbo-mode;
+ };
+ opp14 {
+ opp-hz = /bits/ 64 <3144000000>;
+ opp-level = <14>;
+ clock-latency-ns = <56000>;
+ turbo-mode;
+ };
+ opp15 {
+ opp-hz = /bits/ 64 <3204000000>;
+ opp-level = <15>;
+ clock-latency-ns = <56000>;
+ turbo-mode;
+ };
+#endif
+ };
+
timer {
compatible = "arm,armv8-timer";
interrupt-parent = <&aic>;
@@ -124,6 +298,18 @@ soc {
ranges;
nonposted-mmio;
+ cpufreq_e: cpufreq@...e20000 {
+ compatible = "apple,t8103-cluster-cpufreq", "apple,cluster-cpufreq";
+ reg = <0x2 0x10e20000 0 0x1000>;
+ #performance-domain-cells = <0>;
+ };
+
+ cpufreq_p: cpufreq@...e20000 {
+ compatible = "apple,t8103-cluster-cpufreq", "apple,cluster-cpufreq";
+ reg = <0x2 0x11e20000 0 0x1000>;
+ #performance-domain-cells = <0>;
+ };
+
i2c0: i2c@...010000 {
compatible = "apple,t8103-i2c", "apple,i2c";
reg = <0x2 0x35010000 0x0 0x4000>;
@@ -229,12 +415,12 @@ aic: interrupt-controller@...100000 {
affinities {
e-core-pmu-affinity {
apple,fiq-index = <AIC_CPU_PMU_E>;
- cpus = <&cpu0 &cpu1 &cpu2 &cpu3>;
+ cpus = <&cpu_e0 &cpu_e1 &cpu_e2 &cpu_e3>;
};
p-core-pmu-affinity {
apple,fiq-index = <AIC_CPU_PMU_P>;
- cpus = <&cpu4 &cpu5 &cpu6 &cpu7>;
+ cpus = <&cpu_p0 &cpu_p1 &cpu_p2 &cpu_p3>;
};
};
};
--
2.35.1
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